How To Do The Workout:

This routine, created by Toby Massenburg, group fitness manager at the soon-to-open Equinox Hollywood, is broken in to two circuits. During each circuit you will alternate between strength and cardio moves—and finish with a bonus core-targeting exercises. You will work hard for 20 seconds, trying to complete as many reps as possible, then you'll have 10 seconds to recover before moving on to the next move. Complete circuit one twice before moving on to circuit two—and take one minute to rest between circuits.